13465661 has 12 divisors (see below), whose sum is σ = 15508224. Its totient is φ = 11593800.

The previous prime is 13465643. The next prime is 13465663. The reversal of 13465661 is 16656431.

It is not a de Polignac number, because 13465661 - 2¹⁴ = 13449277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13465663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2276 + ... + 5666.

It is an arithmetic number, because the mean of its divisors is an integer number (1292352).

Almost surely, 2^13465661 is an apocalyptic number.

13465661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13465661 is a deficient number, since it is larger than the sum of its proper divisors (2042563).

13465661 is a wasteful number, since it uses less digits than its factorization.

13465661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3440 (or 3421 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 13465661 is about 3669.5586928131. The cubic root of 13465661 is about 237.9080983593.

It can be divided in two parts, 1346 and 5661, that added together give a palindrome (7007).

The spelling of 13465661 in words is "thirteen million, four hundred sixty-five thousand, six hundred sixty-one".